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Rodax L, Pfeiffer V, Erdmann C, Münte T, Nitschke M. P 14 Functional activation patterns in patients with essential tremor. Clin Neurophysiol 2022. [DOI: 10.1016/j.clinph.2022.01.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Hassoun R, Erdmann C, Schmitt S, Fujita-Becker S, Mügge A, Schröder RR, Geyer M, Borbor M, Jaquet K, Hamdani N, Mannherz HG. Functional Characterization of Cardiac Actin Mutants Causing Hypertrophic (p.A295S) and Dilated Cardiomyopathy (p.R312H and p.E361G). Int J Mol Sci 2022; 23:ijms23084465. [PMID: 35457283 PMCID: PMC9024677 DOI: 10.3390/ijms23084465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 04/15/2022] [Accepted: 04/15/2022] [Indexed: 11/16/2022] Open
Abstract
Human wild type (wt) cardiac α-actin and its mutants p.A295S or p.R312H and p.E361G correlated with hypertrophic or dilated cardiomyopathy, respectively, were expressed by using the baculovirus/Sf21 insect cell system. The c-actin variants inhibited DNase I, indicating maintenance of their native state. Electron microscopy showed the formation of normal appearing actin filaments though they showed mutant specific differences in length and straightness correlating with their polymerization rates. TRITC-phalloidin staining showed that p.A295S and p.R312H exhibited reduced and the p.E361G mutant increased lengths of their formed filaments. Decoration of c-actins with cardiac tropomyosin (cTm) and troponin (cTn) conveyed Ca2+-sensitivity of the myosin-S1 ATPase stimulation, which was higher for the HCM p.A295S mutant and lower for the DCM p.R312H and p.E361G mutants than for wt c-actin. The lower Ca2+-sensitivity of myosin-S1 stimulation by both DCM actin mutants was corrected by the addition of levosimendan. Ca2+-dependency of the movement of pyrene-labeled cTm along polymerized c-actin variants decorated with cTn corresponded to the relations observed for the myosin-S1 ATPase stimulation though shifted to lower Ca2+-concentrations. The N-terminal C0C2 domain of cardiac myosin-binding protein-C increased the Ca2+-sensitivity of the pyrene-cTM movement of bovine, recombinant wt, p.A295S, and p.E361G c-actins, but not of the p.R312H mutant, suggesting decreased affinity to cTm.
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Affiliation(s)
- Roua Hassoun
- Institut für Forschung und Lehre (IFL), Molecular and Experimental Cardiology, Medical Faculty, Ruhr University Bochum, D-44791 Bochum, Germany; (R.H.); (A.M.); (K.J.)
- Department of Cardiology, St. Josef-Hospital, Medical Faculty, Ruhr University Bochum, D-44791 Bochum, Germany
| | - Constanze Erdmann
- Department of Anatomy and Molecular Embryology, Medical Faculty, Ruhr-University Bochum, D-44780 Bochum, Germany;
| | - Sebastian Schmitt
- Institute of Structural Biology, University of Bonn, D-53127 Bonn, Germany; (S.S.); (M.G.)
| | - Setsuko Fujita-Becker
- Cryoelectron Microscopy, BioQuant, Medical Faculty, University of Heidelberg, D-69120 Heidelberg, Germany; (S.F.-B.); (R.R.S.)
| | - Andreas Mügge
- Institut für Forschung und Lehre (IFL), Molecular and Experimental Cardiology, Medical Faculty, Ruhr University Bochum, D-44791 Bochum, Germany; (R.H.); (A.M.); (K.J.)
- Department of Cardiology, St. Josef-Hospital, Medical Faculty, Ruhr University Bochum, D-44791 Bochum, Germany
| | - Rasmus R. Schröder
- Cryoelectron Microscopy, BioQuant, Medical Faculty, University of Heidelberg, D-69120 Heidelberg, Germany; (S.F.-B.); (R.R.S.)
| | - Matthias Geyer
- Institute of Structural Biology, University of Bonn, D-53127 Bonn, Germany; (S.S.); (M.G.)
| | - Mina Borbor
- Department of Neurology, University Hospital Essen, D-45147 Essen, Germany;
| | - Kornelia Jaquet
- Institut für Forschung und Lehre (IFL), Molecular and Experimental Cardiology, Medical Faculty, Ruhr University Bochum, D-44791 Bochum, Germany; (R.H.); (A.M.); (K.J.)
- Department of Cardiology, St. Josef-Hospital, Medical Faculty, Ruhr University Bochum, D-44791 Bochum, Germany
| | - Nazha Hamdani
- Institut für Forschung und Lehre (IFL), Molecular and Experimental Cardiology, Medical Faculty, Ruhr University Bochum, D-44791 Bochum, Germany; (R.H.); (A.M.); (K.J.)
- Department of Cardiology, St. Josef-Hospital, Medical Faculty, Ruhr University Bochum, D-44791 Bochum, Germany
- Correspondence: (N.H.); (H.G.M.); Tel.: +49-234-32-29412 (N.H.); Fax: +49-234-32-14040 (N.H.); +49-234-32-14474 (H.G.M.)
| | - Hans Georg Mannherz
- Institut für Forschung und Lehre (IFL), Molecular and Experimental Cardiology, Medical Faculty, Ruhr University Bochum, D-44791 Bochum, Germany; (R.H.); (A.M.); (K.J.)
- Department of Anatomy and Molecular Embryology, Medical Faculty, Ruhr-University Bochum, D-44780 Bochum, Germany;
- Correspondence: (N.H.); (H.G.M.); Tel.: +49-234-32-29412 (N.H.); Fax: +49-234-32-14040 (N.H.); +49-234-32-14474 (H.G.M.)
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Erdmann C, Hassoun R, Schmitt S, Kikuti C, Houdusse A, Mazur AJ, Mügge A, Hamdani N, Geyer M, Jaquet K, Mannherz HG. Integration of Cardiac Actin Mutants Causing Hypertrophic (p.A295S) and Dilated Cardiomyopathy (p.R312H and p.E361G) into Cellular Structures. Antioxidants (Basel) 2021; 10:antiox10071082. [PMID: 34356314 PMCID: PMC8301065 DOI: 10.3390/antiox10071082] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/26/2021] [Accepted: 06/30/2021] [Indexed: 02/03/2023] Open
Abstract
The human mutant cardiac α-actins p.A295S or p.R312H and p.E361G, correlated with hypertrophic or dilated cardiomyopathy, respectively, were expressed by the baculovirus/Sf21 insect cell system and purified to homogeneity. The purified cardiac actins maintained their native state but showed differences in Ca2+-sensitivity to stimulate the myosin-subfragment1 ATPase. Here we analyzed the interactions of these c-actins with actin-binding and -modifying proteins implicated in cardiomyocyte differentiation. We demonstrate that Arp2/3 complex and the formin mDia3 stimulated the polymerization rate and extent of the c-actins, albeit to different degrees. In addition, we tested the effect of the MICAL-1 monooxygenase, which modifies the supramolecular actin organization during development and adaptive processes. MICAL-1 oxidized these c-actin variants and induced their de-polymerization, albeit at different rates. Transfection experiments using MDCK cells demonstrated the preferable incorporation of wild type and p.A295S c-actins into their microfilament system but of p.R312H and p.E361G actins into the submembranous actin network. Transduction of neonatal rat cardiomyocytes with adenoviral constructs coding HA-tagged c-actin variants showed their incorporation into microfilaments after one day in culture and thereafter into thin filaments of nascent sarcomeric structures at their plus ends (Z-lines) except the p.E361G mutant, which preferentially incorporated at the minus ends.
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Affiliation(s)
- Constanze Erdmann
- Department of Anatomy and Molecular Embryology, Medical Faculty, Ruhr-University Bochum, D-44780 Bochum, Germany;
| | - Roua Hassoun
- Institut für Forschung und Lehre (IFL), Molecular and Experimental Cardiology, Ruhr University Bochum, D-44780 Bochum, Germany; (R.H.); (A.M.); (N.H.); (K.J.)
- Department of Cardiology, St. Josef-Hospital and Bergmannsheil, Ruhr University Bochum, D-44780 Bochum, Germany
| | - Sebastian Schmitt
- Institute of Structural Biology, University of Bonn, D-53127 Bonn, Germany; (S.S.); (M.G.)
| | - Carlos Kikuti
- Institut Curie, Structural Motility Team, F-75005 Paris, France; (C.K.); (A.H.)
| | - Anne Houdusse
- Institut Curie, Structural Motility Team, F-75005 Paris, France; (C.K.); (A.H.)
| | - Antonina J. Mazur
- Department of Cell Pathology, Faculty of Biotechnology, University of Wroclaw, Pl-50-383 Wroclaw, Poland;
| | - Andreas Mügge
- Institut für Forschung und Lehre (IFL), Molecular and Experimental Cardiology, Ruhr University Bochum, D-44780 Bochum, Germany; (R.H.); (A.M.); (N.H.); (K.J.)
- Department of Cardiology, St. Josef-Hospital and Bergmannsheil, Ruhr University Bochum, D-44780 Bochum, Germany
| | - Nazha Hamdani
- Institut für Forschung und Lehre (IFL), Molecular and Experimental Cardiology, Ruhr University Bochum, D-44780 Bochum, Germany; (R.H.); (A.M.); (N.H.); (K.J.)
- Department of Cardiology, St. Josef-Hospital and Bergmannsheil, Ruhr University Bochum, D-44780 Bochum, Germany
| | - Matthias Geyer
- Institute of Structural Biology, University of Bonn, D-53127 Bonn, Germany; (S.S.); (M.G.)
| | - Kornelia Jaquet
- Institut für Forschung und Lehre (IFL), Molecular and Experimental Cardiology, Ruhr University Bochum, D-44780 Bochum, Germany; (R.H.); (A.M.); (N.H.); (K.J.)
- Department of Cardiology, St. Josef-Hospital and Bergmannsheil, Ruhr University Bochum, D-44780 Bochum, Germany
| | - Hans Georg Mannherz
- Department of Anatomy and Molecular Embryology, Medical Faculty, Ruhr-University Bochum, D-44780 Bochum, Germany;
- Institut für Forschung und Lehre (IFL), Molecular and Experimental Cardiology, Ruhr University Bochum, D-44780 Bochum, Germany; (R.H.); (A.M.); (N.H.); (K.J.)
- Department of Cardiology, St. Josef-Hospital and Bergmannsheil, Ruhr University Bochum, D-44780 Bochum, Germany
- Correspondence: ; Fax: +49-234-3214474
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König V. Borstel U, Erdmann C, Maier M, Garlipp F. Relationship between health problems and husbandry, use and management of horses: An analysis based on health insured horses. J Vet Behav 2016. [DOI: 10.1016/j.jveb.2016.08.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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König v. Borstel U, Erdmann C, Maier M, Garlipp F. Relationships between owner-reported behavior problems and husbandry; use and management of horses. J Vet Behav 2016. [DOI: 10.1016/j.jveb.2016.08.060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Nitschke MF, Vassilev K, Erdmann C, Binkofski F, Münte TF. Cerebellar control of preparing and executing eye and hand movements. KLIN NEUROPHYSIOL 2014. [DOI: 10.1055/s-0034-1371197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Asani H, Erdmann C, Aigner T, Berghäußer U, Linsmeier B, Koch A, Franke C. Drei meta-/synchrone Adenokarzinome der Lunge 2010/13 mit differierenden, komplexen Mutationen des Exon 19 oder Deletion des Exon 21 – ein Fallbericht. Pneumologie 2014. [DOI: 10.1055/s-0033-1364129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Nitschke M, Körper J, Binkofski F, Erdmann C, Wolters A, Klein C. Kompensation verminderter cerebelläre Funktion durch vermehrte Rekrutierung cerebraler cortikaler Areale bei Patienten mit hereditärer spinocerebellärer Ataxie (SCA). KLIN NEUROPHYSIOL 2013. [DOI: 10.1055/s-0033-1337157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Al-Khaled M, Heldmann M, Erdmann C, Göttlich M, Klein C, Münte TF, Hagenah J. Funktionelle und strukturelle Konnektivität beim M. Parkinson mit moderater und hoher Hyperechogenität der Substantia Nigra. KLIN NEUROPHYSIOL 2012. [DOI: 10.1055/s-0032-1301448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Willenborg B, Nagel M, Jauch-Chara K, Erdmann C, Lehnert H, Oltmanns KM. Increased neuronal activation and cognitive performance by detemir as compared to human insulin upon a working memory task – an fMRI study. Pharmacopsychiatry 2011. [DOI: 10.1055/s-0031-1292561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Melchert U, Erdmann C, Kreuder F, Nitschke M, Weiss H. Funktionelle Magnet Resonanz Tomografie des Kleinhirns bei komplexen motorischen Aufgaben. BIOMED ENG-BIOMED TE 2009. [DOI: 10.1515/bmte.2000.45.s1.53] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Höblinger A, Erdmann C, Strassburg CP, Sauerbruch T, Lammert F. Coinheritance of hereditary spherocytosis and reversibility of cirrhosis in a young female patient with hereditary hemochromatosis. Eur J Med Res 2009; 14:182-4. [PMID: 19380292 PMCID: PMC3401009 DOI: 10.1186/2047-783x-14-4-182] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Here we report a 33-years-old woman with hereditary spherocytosis and hemochromatosis due to homozygosity for the C282Y mutation of the HFE gene. The coinheritance of both conditions led to severe iron overload and liver cirrhosis at young age. The patient was treated by repeated phlebotomy, and reversibility of cirrhosis was documented by transient elastography. This report discusses the pathophysiology of iron accumulation in patients with hemolytic anemia combined with HFE C282Y homozygosity. The case indicates that patients with hematological disorders characterized by increased erythropoetic activity should be screened for HFE mutations.
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Affiliation(s)
- A Höblinger
- Department of Internal Medicine I, University Hospital Bonn, University of Bonn, Sigmund Freud Str. 25, 53105 Bonn, Germany.
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Leyendecker S, Mohr C, Erdmann C, Petersen D, Helmchen C. Mechanismen der Schmerzlinderung: Der präfrontale Kortex unterscheidet zwischen empfundener und ausgeführter Schmerzkontrolle bei der Hitzehyperalgesie. KLIN NEUROPHYSIOL 2009. [DOI: 10.1055/s-0029-1216091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Nitschke M, Ludwig K, Erdmann C, Kömpf D, Heide W, Binkofski F. Dissociation between coverts shifts of attention and saccadic eye movements demonstrate functional segregation of the cerebellar hemispheres. Clin Neurophysiol 2007. [DOI: 10.1016/j.clinph.2006.11.186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Nitschke M, Melchert U, Erdmann C, Born J, Fischer S. Sleep shapes more effective cerebro-cerebellar networks performing sequential motor tasks. Akt Neurol 2007. [DOI: 10.1055/s-2007-987553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Müller T, Erdmann C, Muhlack S, Bremen D, Przuntek H, Goetze O, Woitalla D. Pharmacokinetic behaviour of levodopa and 3-O-methyldopa after repeat administration of levodopa/carbidopa with and without entacapone in patients with Parkinson's disease. J Neural Transm (Vienna) 2006; 113:1441-8. [PMID: 16604302 DOI: 10.1007/s00702-006-0442-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2005] [Accepted: 12/20/2005] [Indexed: 11/28/2022]
Abstract
Addition of the catechol-O-methyltransferase (COMT) inhibitor entacapone (EN) prolongs plasma metabolism of levodopa (LD). Objectives were to determine the clinical response after EN addition and the plasma degradation of LD and 3-O-methyldopa [3-OMD]. Not optimum treated hospitalised patients with Parkinson's disease received the same LD dosage on the first day only with carbidopa (CD) and on the second day with CD and EN (t.i.d.) within a standardised setting. We scored motor symptoms and measured LD- and 3-OMD levels on both days at fixed moments. Motor impairment significant better improved probably due to significant higher maximum concentrations [C(max)] and computed area under the curve values of LD levels during the LD/CD/EN condition. Time to C(max) of LD was significantly delayed after the first two LD/CD/EN intakes. An impact of EN on 3-OMD levels appeared. A possibly augmented LD absorption and a prolonged LD metabolism after EN supplementation may contribute to a more continuous LD delivery to the brain.
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Affiliation(s)
- T Müller
- Department of Neurology, St. Josef Hospital, Ruhr University Bochum, Bochum, Germany.
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Nitschke MF, Erdmann C, Trillenberg P, Sprenger A, Kock N, Sperner J, Klein C. Functional MRI reveals activation of a subcortical network in a 5-year-old girl with genetically confirmed myoclonus-dystonia. Neuropediatrics 2006; 37:79-82. [PMID: 16773505 DOI: 10.1055/s-2006-924109] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
We investigated a five-year-old girl suffering from genetically confirmed, action-induced myoclonus-dystonia (M-D) with functional magnetic resonance imaging (MRI). We compared the activation pattern by movements of her right hand as if drawing a picture, which elicited M-D, with simple snapping movements (without overt M-D). The drawing and snapping conditions resulted in activation of a motor network including the motor cortex, the putamen, and the cerebellar hemispheres. The direct comparison of the drawing condition with snapping as control revealed specific activations within the thalamus and the dentate nucleus. An age matched healthy control did not show significant activation within the thalamus or dentate nucleus.
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Affiliation(s)
- M F Nitschke
- Department of Neurology, University Hospital of Schleswig-Holstein, Campus Lübeck, Ratzeburger Allee 160, 23538 Lübeck, Germany.
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Nitschke M, Ludwig K, Erdmann C, Kömpf D, Heide W, Binkofski F. Dissociation between coverts shifts of attention and saccadic eye movements demonstrate functional segregation of the cerebellar hemispheres. KLIN NEUROPHYSIOL 2006. [DOI: 10.1055/s-2006-939248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Vassilew G, Erdmann C, Kömpf D, Heide W, Binkofski F, Nitschke M. Calculation of goal directed movements demonstrates a functional segregation of the cerebellar hemispheres. Akt Neurol 2006. [DOI: 10.1055/s-2006-953039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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van Eimeren T, Klein C, Buhmann C, Erdmann C, Büchel C, Binkofski F, Siebner H. Parkinson's disease is associated with an overactivity of executive motor cortical areas compared with Parkin-associated parkinsonism. Akt Neurol 2006. [DOI: 10.1055/s-2006-952963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Mohr C, Erdmann C, Binkofski F, Büchel C, Helmchen C. Schmerzmodulation durch Prädiktion. Akt Neurol 2005. [DOI: 10.1055/s-2005-919285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Lienau F, Erdmann C, Melchert U, Nitschke M. Räumlich-zeitliche Abfolge sensomotorischer Events im cerebro-cerebellären Netzwerk: eine fMRT-Studie. Akt Neurol 2005. [DOI: 10.1055/s-2005-919576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Riesel J, Binkofski F, Erdmann C, Klein C, Kömpf D, Wolters A, Rolfs A, Nitschke M. Kompensationsmechanismen innerhalb des zerebro-zerebellären Netzwerkes zur Steuerung von Augen- und Handbewegungen bei Patienten mit hereditärer spinocerebellärer Ataxie (SCA). Akt Neurol 2005. [DOI: 10.1055/s-2005-919552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Buhmann C, Binkofski F, Klein C, Büchel C, van Eimeren T, Erdmann C, Hedrich K, Kasten M, Hagenah J, Deuschl G, Pramstaller PP, Siebner HR. Motor reorganization in asymptomatic carriers of a single mutant Parkin allele: a human model for presymptomatic parkinsonism. ACTA ACUST UNITED AC 2005; 128:2281-90. [PMID: 15947065 DOI: 10.1093/brain/awh572] [Citation(s) in RCA: 92] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Mutations in the Parkin gene are the most common known single cause of early-onset parkinsonism. It has been shown that asymptomatic carriers with a single mutant allele have latent presynaptic dopaminergic dysfunction in the striatum. Here we used functional MRI to map movement-related neuronal activity during internally selected or externally determined finger movements in 12 asymptomatic carriers of a Parkin mutation and 12 healthy non-carriers. Mean response times were 63 ms shorter during internally selected movements than during externally guided movements (P = 0.003). There were no differences in mean response times between groups (P > 0.2). Compared with externally determined movements, the internal selection of movements led to a stronger activation of rostral motor areas, including the rostral cingulate motor area (rCMA), rostral supplementary motor area, medial and dorsolateral prefrontal cortices. The genotype had a significant impact on movement-related activation patterns. Asymptomatic carriers showed a stronger increase in movement-related activity in the right rCMA and left dorsal premotor cortex, but only if movements relied on internal cues. In addition, synaptic activity in the rCMA had a stronger influence on activity in the basal ganglia in the context of internally selected movements in asymptomatic carriers relative to non-carriers. We infer that this reorganization of striatocortical motor loops reflects a compensatory effort to overcome latent nigrostriatal dysfunction.
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Affiliation(s)
- C Buhmann
- NeuroImage-Nord, Hamburg-Kiel-Lübeck, Germany
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Mohr C, Binkofski F, Erdmann C, Büchel C, Helmchen C. The anterior cingulate cortex contains distinct areas dissociating external from self-administered painful stimulation: a parametric fMRI study. Pain 2005; 114:347-357. [PMID: 15777860 DOI: 10.1016/j.pain.2004.12.036] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2004] [Revised: 11/25/2004] [Accepted: 12/28/2004] [Indexed: 01/27/2023]
Abstract
The anterior cingulate cortex (ACC) has a pivotal role in human pain processing by integrating sensory, executive, attentional, emotional, and motivational components of pain. Cognitive modulation of pain-related ACC activation has been shown by hypnosis, illusion and anticipation. The expectation of a potentially noxious stimulus may not only differ as to when but also how the stimulus is applied. These combined properties led to our hypothesis that ACC is capable of distinguishing external from self-administered noxious tactile stimulation. Thermal contact stimuli with noxious and non-noxious temperatures were self-administered or externally applied at the resting right hand in a randomized order. Two additional conditions without any stimulus-eliciting movements served as control conditions to account for the certainty and uncertainty of the impending stimulus. Calculating the differences in the activation pattern between self-administered and externally generated stimuli revealed three distinct areas of activation that graded with perceived stimulus intensity: (i) in the posterior ACC with a linear increase during external but hardly any modulation for the self-administered stimulation, (ii) in the midcingulate cortex with activation patterns independent of the mode of application and (iii) in the perigenual ACC with increasing activation during self-administered but decreasing activation during externally applied stimulation. These data support the functional segregation of the human ACC: the posterior ACC may be involved in the prediction of the sensory consequences of pain-related action, the midcingulate cortex in pain intensity coding and the perigenual ACC is related to the onset uncertainty of the impending stimuli.
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Affiliation(s)
- C Mohr
- Neuroimage Nord (NIN), Department of Neurology, University of Lübeck, Ratzeburger Allee 160, 23538 Lübeck, Germany Neuroimage Nord (NIN), Department of Neurology, University of Hamburg, Martinistr. 52, 20246 Hamburg, Germany
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Erdmann C, Muhlack S, Bremen D, Woitalla D, Przuntek H. Die Effizienz von Levodopa/Carbidopa/Entacapone auf komplexe Bewegungsabläufe bei Parkinson-Patienten. Akt Neurol 2005. [DOI: 10.1055/s-2005-866678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Nitschke MF, Arp T, Stavrou G, Erdmann C, Heide W. The cerebellum in the cerebro-cerebellar network for the control of eye and hand movements--an fMRI study. Prog Brain Res 2005; 148:151-64. [PMID: 15661188 DOI: 10.1016/s0079-6123(04)48013-3] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The coordination of optical information and manipulation of objects in space by eye and hand movements is controlled by a cerebro-cerebellar network. The differential influence of prefrontal, motor, or parietal areas in combination with cerebellar areas, especially within the posterior hemispheres, on the control of eye and hand movements is not very well defined. Using fMRI we investigated the functional representation of isolated or combined eye and hand movements within the cerebellum and the impact of differential cognitive preload on the activation patterns. Each task consisted of the performance of saccades or hand movements triggered by a cue presented on a screen in front of the scanner. Saccades were tested for visually guided saccades, triple step saccades, and for visuospatial memory. Sequential finger opposition movements were tested for predictive and nonpredictive movements. Combined and isolated eye-hand reaching movements were tested toward a target presented in 5 different horizontal positions. Visually guided saccades activated the cerebellar vermis lobuli VI-VII, triple step saccades, including visuospatial memorization, in addition the cerebellar hemispheres lobuli VII-VIII. Sequential finger movements and reaching movements activated a cerebellar network consisting of the lobuli IV-VI, the vermis, and the lobuli VII-VIII with broader areas and additional regions especially within the lobus VII for more complex movements. The combined in contrast to the isolated performance of eye and hand movements demonstrated specialized activation foci within the cerebellar vermis and posterior hemispheres. We could demonstrate a differential representation of eye and hand movements within the cerebellum. Additional "cognitive" preload within a given task leads to additional activation of the posterior cerebellar hemispheres, with a subspecialization corresponding to premotor and parietal area connections.
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Affiliation(s)
- M F Nitschke
- Department of Neurology, Medical University of Lübeck, Germany.
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Helmchen C, Mohr C, Erdmann C, Binkofski F. Cerebellar neural responses related to actively and passively applied noxious thermal stimulation in human subjects: a parametric fMRI study. Neurosci Lett 2004; 361:237-40. [PMID: 15135937 DOI: 10.1016/j.neulet.2003.12.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Cerebellar activation is consistently found during noxious stimulation but little is known about its pain-related specificity. Under natural circumstances noxious stimuli are actively or passively delivered with concomitant tactile sensory stimulation. Using fMRI we therefore studied pain-related cerebellar activation with innocuous and noxious thermal stimuli in a parametric design taking motor execution as confounding factor into account. With respect to psychophysical pain ratings anterior vermal and ipsilateral hemispheric lobule VI activation was parametrically modulated for stimulus intensity in actively but not in passively elicited thermal stimulation. The cerebellum seems to be capable of distinguishing active from passive painful stimuli.
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Affiliation(s)
- C Helmchen
- Department of Neurology, University of Luebeck, Ratzeburger Allee 160, D-23538 Lübeck, Germany.
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Lienau F, Erdmann C, Melchert U, Nitschke M. Time-Delays during Processing of Sensory-Motor Events within the Cerebro-Cerebellar Network: An fMRI Study. KLIN NEUROPHYSIOL 2004. [DOI: 10.1055/s-2004-832078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Nitschke M, Ludwig K, Vassilev G, Erdmann C, Kömpf D, Heide W, Binkofski F. Differential Functional Predominance of the Frontal and Parietal Areas during Performance of Isolated or Combined Eye and Hand Reaching Movements. KLIN NEUROPHYSIOL 2004. [DOI: 10.1055/s-2004-832112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Helmchen C, Mohr C, Erdmann C, Binkofski F, Büchel C. Der anteriore cinguläre Kortex unterscheidet selbst- von fremdzugeführter Schmerzreizung: eine parametrische fMRT-Studie. KLIN NEUROPHYSIOL 2004. [DOI: 10.1055/s-2004-832013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Lienau FS, Erdmann C, Melchert U, Nitschke MF. Cerebro-cerebelläre Verarbeitung zeitlich nicht prädizierbarer sensomotorischer Events: Eine fMRT-Studie. Akt Neurol 2004. [DOI: 10.1055/s-2004-833293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Mohr C, Erdmann C, Binkofski F, Büchel C, Helmchen C. Der anteriore cinguläre Kortex unterscheidet selbst- von fremdzugeführter Schmerzreizung: eine parametrische fMRT-Studie. Akt Neurol 2004. [DOI: 10.1055/s-2004-833040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Nitschke MF, Fischer S, Melchert U, Erdmann C, Born J. Sleep-dependent motor memory formation detected by fMRI. Akt Neurol 2004. [DOI: 10.1055/s-2004-833059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Nitschke MF, Arp T, Sprenger A, Erdmann C, Melchert U, Petersen D, Kömpf D, Binkofski F, Heide W. Zerebro-zerebelläre Aktivierungen bei koverten Verschiebungen der Aufmerksamkeit im Vergleich zu Augenbewegungen. KLIN NEUROPHYSIOL 2003. [DOI: 10.1055/s-2003-816501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Nitschke MF, Erdmann C, Müller B, Kock N, Sprenger A, Melchert U, Pramstaller P, Sperner J, Klein C. Subkortikale Aktivierungen bei einem Kind mit genetisch gesicherter Myoklonus-Dystonie. KLIN NEUROPHYSIOL 2003. [DOI: 10.1055/s-2003-816502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Abstract
It is controversial whether opsoclonus is a cerebellar or brainstem disorder. Two patients whose opsoclonus largely disappeared on eye closure underwent fMRI. A comparison of these two states revealed neither vermal nor brainstem activation but rather a bilateral activation in the deep cerebellar nuclei in excess of what the authors found in healthy subjects. The results support a crucial role of the fastigial nucleus in opsoclonus.
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Affiliation(s)
- C Helmchen
- Department of Neurology, University of Lübeck, Germany.
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Helmchen C, Mohr C, Erdmann C, Petersen D, Nitschke MF. Differential cerebellar activation related to perceived pain intensity during noxious thermal stimulation in humans: a functional magnetic resonance imaging study. Neurosci Lett 2003; 335:202-6. [PMID: 12531467 DOI: 10.1016/s0304-3940(02)01164-3] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Little is known about the cerebellar involvement in pain processing in spite of the fact that the cerebellum probably plays a crucial role in pain-related behavior. Using functional magnetic resonance imaging we examined the differential cerebellar activation in 18 healthy subjects in relation to their perceived pain-intensity of noxious and non-noxious thermal stimuli. In contrast to non-noxious (40 degrees C) stimuli, noxious (48.5 degrees C) stimuli revealed activation in the deep cerebellar nuclei, anterior vermis and bilaterally in the cerebellar hemispheric lobule VI. With the same noxious stimulus (48.5 degrees C) there was differential cerebellar activation depending on the perceived pain intensity: high pain intensity ratings were associated with activation in ipsilateral hemispheric lobule III-VI, deep cerebellar nuclei and in the anterior vermis (lobule III). This differential cerebellar activation pattern probably reflects not only somatosensory processing but also perceived pain intensity that may be important for cerebellar modulation of nociceptive circuits.
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Affiliation(s)
- C Helmchen
- Department of Neurology, Medical University of Lübeck, Ratzeburger Allee 160, D-23538 Lübeck, Germany.
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Erdmann C. Child immunization. Stuck on service. Hosp Health Netw 1999; 73:22, 24. [PMID: 10576869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
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Erdmann C. Drug costs. Double your measure. Hosp Health Netw 1999; 73:16, 18, 20. [PMID: 10576867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
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Erdmann C. Patient pleasers. Baby's first keeper. Hosp Health Netw 1999; 73:26, 28. [PMID: 10523106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
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Abstract
In an experimental model in rats, xenogeneic membranes consisting of processed native collagen and elastin were grafted to serve as a template for the formation of a neo-dermis, while in vitro-cultured autogeneic keratinocytes were applied on top of this to restore an epidermis. The process of tissue reconstruction and the digestion of the grafted membrane components were analysed by histological and immunohistochemical methods as well as electron microscopy. Approximately 3 weeks post grafting the membranes were completely vascularised and colonized by different types of cells. After 6 weeks, the collagenous fibres of the graft were mostly replaced by newly formed collagenous texture, whereas elastic membrane components were still present even after 20 weeks. In a second step, in vitro-cultured keratinocytes were applied onto the partially integrated membranes, resulting in an epithelial coverage of approximately 47% of the grafted area after 8-11 days. As early as on day 6 post application, a multilayered, partially differentiated epithelium, together with lymphocytes and Langerhans' cells, could be observed. After 10 days the formation of a basement membrane including anchoring fibrils appeared to be complete. This three-dimensional matrix structure offers a promising scaffold for a tissue engineering strategy to restore skin structure and function. Further experimental studies are in progress to test its applicability to human skin replacement.
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Affiliation(s)
- B Hafemann
- Clinic of Plastic Surgery, Hand and Burn Surgery, University of Technology Aachen, Germany
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Abstract
OBJECTIVES This study describes the incidence of late-stage and in situ breast cancer among White women, using specialized mapping techniques that reflect incidence adjusted for the population at risk, and applies these maps to characterize areas with high and low risk of breast cancer. METHODS Data from the Surveillance, Epidemiology, and End Results (SEER) database and the US Census Bureau were used to study the geographic distribution of breast cancer at the census-tract level in 2 San Francisco Bay Area counties for the years 1978 through 1982. Sociodemographic characteristics of areas with high and low incidence of the stage-specific disease were compared by means of a linear discriminant function. RESULTS For late-stage breast cancer, the most important variables in discriminating high-risk from low-risk areas were college education, percentage of residents over age 65, and median income. The strongest ecologic indicators of high risk for in situ breast cancer were median income and percentage unemployed. CONCLUSIONS This study demonstrates the usefulness of census tracts and sociodemographic measures of income and education in describing in situ and late-stage breast cancer.
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Affiliation(s)
- S Selvin
- Department of Biostatistics, School of Public Health, University of California, Berkeley 94720-7360, USA
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